Marine Information System

The IAEA's Marine Information System is a relational database, based on GIS (Geographical Information System), covering the distribution of radioactive and stable isotopes, and in the near future also other tracers (organic compounds, trace metals) in the marine environment.

MARIS also includes oceanographic parameters, such as seawater temperature, salinity and bathymetry. The database was developed in the Radiometrics Laboratory of the IAEA's Marine Environment Laboratory (IAEA-MEL) in Monaco. The map on the website shows the distribution of sites for which data on radionuclides in the World's oceans and seas were entered into the database.

The first main objective of MARIS is to provide information on the radioactive contamination of the marine environment. Formerly this function was supported by the Global Marine Radioactivity Database (GLOMARD). MARIS contains data on the most important radionuclides in the world oceans and seas (open sea as well as in coastal zones), specifically in seawater, particulate matter, biota and sediment.

These data originate from published scientific papers, reports and databases created within institutes or scientific programmes in Member States and can be used with appropriate quotation of sources and references. Quantification of contributions from the sources of radionuclides in the world's oceans and seas, computer modelling of the dispersion of radionuclides and radiological assessment studies require that IAEA's Member States be provided with information on the past and present levels of radionuclides in the marine environment.

The IAEA acts as a clearing-house for information on radioactive contaminants in the marine environment and makes data on marine radionuclide levels available to Member States for future assessment studies and the evaluation of trends in contamination of the marine environment.

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Resource Characteristics

Last Resource Update : 2011

Environmental Sciences

Organizational Source
NAEL - Marine Environmental Studies Laboratory

Data Type

Water, Environment, trace metals, seawater, bathymetry, seawater temperature, particulate matter, marine, oceanographic parameters, biota, tracers, salinity, organic compounds, sediment, stable isotopes

Related Sites
IAEA Marine Environment Laboratories Monaco